Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '445010fdf3d106ff624fd546bfbff384f6dee1f0cb110105de27df5adb49a4f2' 
  AND token = '3EsOcudcY+gl4kCOZbb06UBK9TJrZz2iuNLmskc1H5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}